Patents by Inventor Li-Ran Dong

Li-Ran Dong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Carburized lutetium oxide doped molybdenum cathode and its fabrication method
    Patent number: 9646796
    Abstract: A method of manufacturing carburized Lu2O3 doped Mo cathodes for thermionic emission for magnetrons is described. The Lu2O3 doped Mo powder is prepared by sol-gel method. The powder is reduced thoroughly in hydrogen atmosphere. Afterwards, the powder is die-pressed into pellets, followed by sintering in hydrogen and carburization in activated carbon powder to obtain the carburized Lu2O3 doped Mo cathode.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: May 9, 2017
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Jin-Shu Wang, Wei Liu, Li-Ran Dong, Qiang Wang, Xiang Liu, Fan Zhou, Mei-Ling Zhou, Tie-Yong Zuo